To transport water/nutrients to upper part of the plant
Answer:
The hemoglobin in an individual of Denver which lives higher altitude than the Philadelphia will be higher due to the higher elevation atmospheric pressure decreases that causes hemoglobin to nind to the RBCs and that will lowers the oxygen level in the body of the person. To overcome this drawback hemoglobin content is higher in people living at higher elevation.
I think the correct answer among the choices listed above is option A. All of the following are abiotic factors in an ecosystem except algae. Abiotic factors is concerned on the non-living parts of the environment that affect organisms.